Gwen Shapira created KAFKA-9631:
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Summary: MockAdminClient doesn't handle CreateTopics optional
fields
Key: KAFKA-9631
URL: https://issues.apache.org/jira/browse/KAFKA-9631
Project: Kafka
Issue Type: Bug
Reporter: Gwen Shapira
AdminClient's {{createTopics()}} method has a variant with two optional fields.
So I'd expect the following code to work correctly:
{{admin.createTopics(Collections.singletonList(new NewTopic(TOPIC_NAME,
Optional.empty(), Optional.empty())))}}
Indeed it works great, as long as we are using the real KafkaAdminClient.
MockKafkaAdminClient tries to get number of replicas without checking that the
values make sense , and therefore it fails with:
{{java.lang.IllegalArgumentException: Illegal Capacity: -1}}{{at
java.base/java.util.ArrayList.<init>(ArrayList.java:158)}}
{{ at
org.apache.kafka.clients.admin.MockAdminClient.createTopics(MockAdminClient.java:183)}}
{{ at org.apache.kafka.clients.admin.Admin.createTopics(Admin.java:125)}}
Making a mockery of the mock.
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